Bosch Dishwasher E01 Error Code

Bosch Dishwasher E01 Error Code – Troubleshooting & Fix Guide

If your Bosch dishwasher is displaying the E01 error code, it means the appliance is experiencing a power module failure. This issue is often related to problems with the heat pump, drain pump, wiring, or an unstable power supply.

In this guide, we’ll explain what the E01 error means, explore possible causes, and offer solutions to get your Bosch dishwasher working again.

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What Does the Bosch Dishwasher E01 Error Code Mean?

The E01 error typically indicates a failure in the control or power module. It can result from the following:

• Defective pump control or switchover mechanism
• Faulty relay to the heat pump heater
• Disconnected or damaged heating or drain pump
• Unstable electrical supply (low voltage or sudden voltage drops)

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Common Causes of the Bosch Dishwasher E01 Error

If you’re troubleshooting the Bosch E01 error code, here are the most common culprits:

• ⚡ Low or unstable power supply
• 🔥 Faulty heat pump or heater
• 💧 Defective drain pump
• 🔌 Loose or damaged wire connections
• 🧠 Failed power module or control board

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How to Fix the Bosch E01 Error Code

Here are some basic steps you can take before calling a technician:

1. Unplug the dishwasher for 5–10 minutes, then plug it back in to reset the electronics.
2. Check your home’s voltage — ensure it meets Bosch’s operating requirements.
3. Inspect the wiring harness and connections for any damage or loose parts.
4. Call a professional technician if the issue persists, especially if replacing internal components like the power module or heat pump is required.

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Final Thoughts

The E01 error on a Bosch dishwasher is usually tied to a serious electrical or control issue. While some quick checks can help, this error often requires professional repair. Acting quickly can help prevent further damage and restore your dishwasher to full function.